The Role of Cold Working in the Creep Deformation of Nb Stabilized Stainless Steel. I. Creep Results and Microstructural Evolution

Reheat cracking has been observed in the heat affected zone of the 316H austenitic stainless steel thick section weldments during service at a temperature of ∼500°C. This has been attributed to the creep dominated relaxation of the highly triaxial residual stresses. Here the role of thermo-mechanical variables that contribute to the susceptibility of thick section 316H austenitic stainless steel weldments is briefly reviewed. The influence of the plastic strain, carbide precipitation and impurity element segregation on the subsequent creep deformation behaviour and the susceptibility to creep cavitation damage is discussed. A systematically designed experiment which includes these parameters has been undertaken for a 316H austenitic stainless steel. In addition, residual stress profiles have been introduced into cylindrical pre-treated specimens and the relaxation of these profiles with heat treatment has been measured by neutron diffraction. The experimental results are considered with respect to the effect of the microstructure on subsequent creep deformation and stress relaxation. The susceptibility to intergranular brittle fracture is discussed and an attempt is made to correlate the microstructure and stress state factors encountered in the HAZ with the accumulation of the creep cavitation associated with reheat cracking.

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ALLVAC 13-8

Alloy Digest ◽

10.31399/asm.ad.ss0866 ◽

2002 ◽

Vol 51 (11) ◽

Keyword(s):

Stainless Steel ◽

Precipitation Hardening ◽

Cold Working ◽

High Strength ◽

Heat Treating ◽

General Corrosion ◽

Single Treatment ◽

Good Resistance ◽

Temperature Performance ◽

Very High

Abstract Allvac 13-8 has good fabricability and can be age hardened by a single treatment in the range 510-620 deg C (950-1150 deg F). Cold working prior to aging enhances the aging. This martensitic precipitation-hardening stainless steel has very good resistance to general corrosion and stress-corrosion cracking. It develops very high strength and exhibits good transverse ductility and toughness in heavy sections. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-866. Producer or source: Allvac Metals Company.

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ALLEGHENY LUDLUM TYPE 205

Alloy Digest ◽

10.31399/asm.ad.ss0640 ◽

1997 ◽

Vol 46 (10) ◽

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Corrosion Resistance ◽

Physical Properties ◽

Tensile Properties ◽

Magnetic Permeability ◽

Cold Working ◽

High Strength ◽

Heat Treating ◽

Austenitic Steels

Abstract Allegheny Stainless Type 205 is a chromium-manganese nitrogen austenitic high strength stainless steel that maintains its low magnetic permeability even after large amounts of cold working. Annealed Type 205 has higher mechanical properties than any of the conventional austenitic steels-and for any given strength level, the ductility of Type 205 is comparable to that of Type 301. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: SS-640. Producer or source: Allegheny Ludlum Corporation. Originally published March 1996, revised October 1997.

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REMANIT 4306

Alloy Digest ◽

10.31399/asm.ad.ss0679 ◽

1997 ◽

Vol 46 (4) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Austenitic Stainless Steel ◽

Cold Working ◽

Heat Treating ◽

Operating Conditions ◽

Low Carbon ◽

Corrosion Resistant ◽

Temperature Performance

Abstract Remanit 4306 is a low-carbon chromium nickel austenitic stainless steel that is superior in corrosion resistance to type 302 (see Alloy Digest SS-99, revised September 1998). Due to its low carbon content, Remanit 4306 is intergranular corrosion resistant under continuous operating conditions up to 350 C (652 F). This grade is particular suitable for high degrees of cold working and for sequential drawing. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-679. Producer or source: Thyssen Stahl AG.

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Everyday Products

10.1093/oso/9780198804079.003.0012 ◽

2017 ◽

Author(s):

David Segal

Keyword(s):

Stainless Steel ◽

Hard Candy

Chapter 12 describes material aspects of everyday products. For example, the role of nanoparticles in sunscreens. It also covers surfactants and their role in micelles in washing-up liquids. The role of nanotechnology in cosmetics is stressed. The surprising use of hydrogels in disposable nappies (diapers) and the role of microstructure in sweets such as hard candy (boiled sweets) are described. Other everyday products include breathable garments, stainless steel and acrylic textiles.

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